One-shots/limited/series
Issues that need number of pages (or the like)
By writer? and such
Issue condition
Issue rank
Issue collected by other members
[Date purchased, which is not in the DB]
B-W/Color...
Maybe, issues by cover price, in groups of say 0-.50, .51-1.00, ...
or, issues by years printed, maybe even GA and SA, and Modern(?)

A version 0.1 of the missing issues report is now available from the Reports section of your collection.

Definitely a great start.

Some features I would like to see in regards to this report is to view one or more specific titles that I define instead of everything. Also to be able to define a range - either with issue numbers I input, or beginning with the earlier issue of that title I own, for instance - would be great too.

Perhaps when first entering that report area, you could be presented with a grid/chart thing that lists all the titles you have missing issues of, how many issues of each title you're missing, a checkbox to include that title in the report, and an additional box to enter a beginning issue number or select from pre-defined options (such as "FROM: earliest issue I have - TO most recent issue", issues between date ranges, only by certain creators (or exclude certain creators). Maybe also have a checkbox to include annuals, variants, etc, or exclude them from the report.

I realize that's a lot of work, and it could get quite complex, but it could also be one of the most important features of the site!

Heath wrote:... to view one or more specific titles that I define instead of everything... to define a range - either with issue numbers I input, or beginning with the earlier issue of that title I own, for instance... or select from pre-defined options (such as "FROM: earliest issue I have - TO most recent issue"... have a checkbox to include annuals, variants, etc, or exclude them from the report.

I totally agree with all these suggestions, and I just submitted a feature request yesterday to that effect (before seeing this post, unfortunately).

A really useful "missing issues" report would be a killer feature for me.